Message-ID: <63FD9F4E25E74CC4AE2C2C516FFCE2FE@AGB>
From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: 	<C12A5F115FCC4688B67B61DAF096757F@ns94d01ae4d850><B912A8A5763D45448447109866FC713E@AGB><006701c95262$15df2cf0$6401a8c0@asus><20081129231044.csjomy50gdw8kss8@webmail4.kuleuven.be><467399265F80446CB93A56E6A4C11509@AGB> <20081129234745.gs2fyxmfbhgk0w88@webmail4.kuleuven.be>
In-Reply-To: <20081129234745.gs2fyxmfbhgk0w88@webmail4.kuleuven.be>
Date: Sun, 30 Nov 2008 00:12:39 -0000
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Subject: Re: LF: RE: K1JT WSPR BEACON  503 KHZ - NOW TILL LATER !
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Ok Rick

Well , there is a qso  mode for wspr .. its on the download site .. but ive 
not  had a look at it yet...

On the rx tune ... ok ... its a little confusing as the dial frequency is 
normally given ... however . the audio tone frequency is the differance of 
the carrier and the dial frequency ... I have set  10.1000 and 10.101500  to 
give me a true 1500 tone , the exciter is set to  501.5 usb ..

CW reception .. I don't know if the system works in either sense .. ie  tx 
set usb and rx set lsb ....However as long as the bfo is stable and on the 
same side as the usb filter carrier insertion oscillator you can use the 
narrow cw filter as the shift is I think  2 Hz  !

Assuming your cw filter is centred on the IF pass band  ... ie dial 
frequency ..... if you tune to  a known signal with the filter 'in'  (zero 
beat) with the rx audio fed to  say 'spec-lab' set the bfo to  'on' and vary 
till the beat note shows 1500 hz on the analyzer

Re set your dial frequency to   503 Khz 'dead' and the recovered audio will 
be cantered on 1500 hz   ....

nb-- due to  the 'extreme' (for want of a better word) audio processing , 
signals within the audio pass band will not affect decoding unless they are 
on the same frequency ... unless they are blocking the rx


Hope thats ok ?

Tnx - Graham ..





--------------------------------------------------
From: "Rik Strobbe" <Rik.Strobbe@fys.kuleuven.be>
Sent: Saturday, November 29, 2008 10:47 PM
To: <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: RE: K1JT WSPR BEACON  503 KHZ - NOW TILL LATER !

>
> Hi Graham,
>
> right now your signal coming up, weak but audible with CW filter.
> As I just downloaded & installed WSRP I followed the instructions that
> say receiver in USB at -1500Hz of the desired RX frequency. That
> worked well with the SSB filter (despite the awfull noise at 2700Hz
> bandwidth).
> But the instructions are "basic" as is the help function.
> If it would be possibe to decode at 800Hz audio I could use the CW
> filter and win a lot of dB's.
> As I understand WSPR seems a "monitor mode", any option to make a QSO
> (ie. exchange reports)?
>
> 73, Rik  ON7YD -OR7T
>
>
> Quoting Graham <g8fzk@g8fzk.fsnet.co.uk>:
>
>> Ok Rick
>>
>> Thanks for report .. also  your  test or7t last night  5/5/9
>>
>> Tnx- G ..
>>
>> --------------------------------------------------
>> From: "Rik Strobbe" <Rik.Strobbe@fys.kuleuven.be>
>> Sent: Saturday, November 29, 2008 10:10 PM
>> To: <rsgb_lf_group@blacksheep.org>
>> Subject: Re: LF: RE: K1JT WSPR BEACON  503 KHZ - NOW TILL LATER !
>>
>>>
>>> Graham,
>>>
>>> here (jo20IX) good copy at -25dB
>>>
>>> 73, Rik  ON7YD / OR7T
>>>
>>>
>>>
>>> Quoting Gary - G4WGT <g4wgt@tiscali.co.uk>:
>>>
>>>> Hi Graham, LF,
>>>>
>>>>
>>>>
>>>> No problem here.
>>>>
>>>>
>>>>
>>>> 081129 2012  36   3  1.3   0.502999  G0NBD IO83 27           0     1 
>>>> 0
>>>>
>>>> 081129 2016  36   4  1.2   0.502999  G0NBD IO83 27           0     1 
>>>> 0
>>>>
>>>> 081129 2022  36   4  1.3   0.502999  G0NBD IO83 27           0     1 
>>>> 0
>>>>
>>>> 081129 2030  37   4  1.1   0.502999  G0NBD IO83 27           0     1 
>>>> 0
>>>>
>>>>
>>>>
>>>> 73
>>>>
>>>>
>>>>
>>>> Gary - G4WGT.
>>>>
>>>>
>>>>
>>>>  _____
>>>>
>>>> From: owner-rsgb_lf_group@blacksheep.org
>>>> [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Graham
>>>> Sent: 29 November 2008 17:34
>>>> To: rsgb_lf_group@blacksheep.org
>>>> Subject: LF: K1JT WSPR BEACON 503 KHZ - NOW TILL LATER !
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Hi Lf ..
>>>>
>>>>
>>>>
>>>> Running  K1JT  WSPR  beacon   20 % tx
>>>>
>>>>
>>>>
>>>> Carrier  frequency   503 KHz
>>>>
>>>>
>>>>
>>>> Dial set   501.5 Khz usb , audio tone 1500 Hz
>>>>
>>>>
>>>>
>>>> Running  approx  75 watts to  35 ft top loaded vertical ,
>>>>
>>>> (If the pa trips beacon will continue at -14 db level)
>>>>
>>>>
>>>>
>>>> Reports welcome
>>>>
>>>>
>>>>
>>>> Tnx - Graham
>>>>
>>>>
>>>>
>>>> G0NBD / IO83LK
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>> Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
>>>
>>>
>>>
>>
>>
>>
>>>
>>> No virus found in this incoming message.
>>> Checked by AVG - http://www.avg.com
>>> Version: 8.0.176 / Virus Database: 270.9.11/1819 - Release Date:
>>> 11/29/2008 10:37
>>>
>
>
>
> Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
>
>
>



>
> No virus found in this incoming message.
> Checked by AVG - http://www.avg.com
> Version: 8.0.176 / Virus Database: 270.9.11/1819 - Release Date: 
> 11/29/2008 10:37
>